MyEclipse 打开Struts配置文件时出错的终级解决办法

参考博文：http://www.busfly.cn/post/MyEclipse-Struts-open-error.html

通过手动加入Struts包来开发J2EE工程,可是结果却发现不能使用Struts的默认编辑器来打开Struts配置文件,双击打开Struts配置文件时,就出错,图片如下:见连接

    org.eclipse.ui.PartInitException: Project newsjq is not configured as a MyEclipse Web-Struts Project. Therefore the MyEclipse Struts Editor may not be used with struts-config.xml. The default XML Editor has been used to open the file instead.
     at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.init(StrutsConfigEditor.java:475)
     at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:794)
     at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:643)
     at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:426)
     at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:592)
     at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:299)
     at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:179)
     at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
     at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
     at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:400)
     at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1256)
     at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1209)
     at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1604)
     at org.eclipse.ui.internal.PartStack.add(PartStack.java:499)
     at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103)
     at org.eclipse.ui.internal.PartStack.add(PartStack.java:485)
     at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112)
     at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63)
     at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:217)
     at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:207)
     at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:774)
     at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:673)
     at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:634)
     at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2737)
     at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2651)
     at org.eclipse.ui.internal.WorkbenchPage.access$13(WorkbenchPage.java:2643)
     at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2595)
     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
     at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2590)
     at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2574)
     at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2565)
     at org.eclipse.ui.ide.IDE.openEditor(IDE.java:644)
     at org.eclipse.ui.ide.IDE.openEditor(IDE.java:603)
     at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:286)
     at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:139)
     at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:194)
     at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:175)
     at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:268)
     at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:244)
     at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:316)
     at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$5.open(PackageExplorerPart.java:613)
     at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:820)
     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
     at org.eclipse.core.runtime.Platform.run(Platform.java:857)
     at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:46)
     at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:199)
     at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:818)
     at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1079)
     at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1183)
     at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:263)
     at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:257)
     at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:297)
     at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
     at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
     at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
     at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
     at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
     at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
     at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
     at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
     at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
     at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
     at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
     at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169)
     at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
     at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
     at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
     at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:508)
     at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
     at org.eclipse.equinox.launcher.Main.run(Main.java:1173)
     at org.eclipse.equinox.launcher.Main.main(Main.java:1148)

看到"org.eclipse.ui.PartInitException: Project newsjq is not configured as a MyEclipse Web-Struts Project. Therefore the MyEclipse Struts Editor may not be used with struts-config.xml. The default XML Editor has been used to open the file instead."这行错误提示,还以为默认编辑器被修改了,于是重新将它设成默认编辑器,结果还是不行.

后来仔细对比了一下手动加入Struts包的项目与[右键单击工程，选择MyEclipse-> add Struts capabilities]加入Struts的项目比较,发现他们在项目的文件里有一点点的差别,那就是在在项目下的.project文件里少了一行代码<nature>com.genuitec.eclipse.cross.easystruts.eclipse.easystrutsnature</nature>, 把这个加上去,就OK 了.

最后总结出修改办法,如下:

    解决办法一:,在项目下的.project文件里添加一行代码<nature>com.genuitec.eclipse.cross.easystruts.eclipse.easystrutsnature</nature>,结果如下

    </projectDescription>
    ......
     </natures>
     ......
      <nature>com.genuitec.eclipse.cross.easystruts.eclipse.easystrutsnature</nature>
     </natures>
    </projectDescription>
    刷新工程就可以正常打开了

    解决办法二:
    右键单击工程，选择MyEclipse-> add Struts capabilities

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我在按步骤操作自己的project时，却发现不行，思考后，发现自己的project同时没有加入Web-project特性，这就是原因。
这怎么办呢？添加web-project特性就行了，此时，又一个问题：默认为WebRoot，而我的却为web，在添加web-project特性时修改一下就ok了!

思考：
1. 原来Myeclipse中的 .project .classpath .mymetadata也是需要学习的！好处多多！